LayoutTests/fast/ruby/annotation-with-line-gap.html

<style>
div {
  background-color: green;
  font-size: 20px;
  color: transparent;
}
</style>
<div lang="ja">first line<ruby>base<rt>annotation</rt></ruby></div>
<div lang="ja">second line<br><ruby>base<rt>annotation</rt></ruby></div>